package com.jyun;


import javax.servlet.*;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;

public class GzipFilter implements Filter {
    public void init(FilterConfig filterConfig) throws ServletException {

    }

    public void doFilter(ServletRequest servletRequest, ServletResponse servletResponse, FilterChain filterChain) throws IOException, ServletException {
        HttpServletRequest request=(HttpServletRequest)servletRequest;
        HttpServletResponse response=(HttpServletResponse)servletResponse;
        String acceptEncoding=request.getHeader("Accept-Encoding");
        if(acceptEncoding!=null&&acceptEncoding.toLowerCase().indexOf("gzip")!=-1){
            GzipResponse gzipResponse=new GzipResponse(response);
            filterChain.doFilter(request,gzipResponse);
            gzipResponse.finishResponse();
        }
        else {
            filterChain.doFilter(request,response);
        }
    }

    public void destroy() {

    }
}
